.workbook{
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  padding-bottom: calc(100rpx + env(safe-area-inset-bottom));
  // padding-top: constant(safe-area-inset-top);
  // padding-top: env(safe-area-inset-top);

  .bg{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: -1;
  }
  .head{
    height: 168rpx;
    box-sizing: border-box;
    flex-shrink: 0;
    padding-top: 72rpx;
    padding-left: 40rpx;
    display: flex;
    align-items: center;
    color: #FFF;
    font-size: 40rpx;
  }
  .wrapper{
    box-sizing: border-box;
    padding: 24rpx 35rpx;
    height: calc(100% - 190rpx - 168rpx);
    .item{
      display: flex;
      align-items: center;
      border-radius: 22rpx;
      background: #FFFFFF;
      box-shadow: 0rpx 8rpx 20rpx 0rpx rgba(0, 0, 0, 0.07);
      padding: 30rpx;
      margin-bottom: 20rpx;
      .left{
        flex: 1;
        .phrase{
          font-family: PingFang SC;
          font-size: 40rpx;
          font-weight: 600;
          line-height: 32rpx;
          color: #000000;
        }
        .sub{
          font-family: PingFang SC;
          font-size: 28rpx;
          font-weight: normal;
          line-height: 32rpx;
          color: #333333;
          margin-top: 18rpx;
          width: 460rpx;
        }
      }
      .voice{
        flex-shrink: 0;
        width: 56rpx;
        height: 56rpx;
        border-radius: 56rpx;
        background: #E9EAF2;
        display: flex; 
        justify-content: center;
        align-items: center;
        margin-right: 32rpx;
        .voice-img{
          width: 40rpx;
          height: 40rpx;
        }
      }
      .icon{
        flex-shrink: 0;
        font-size: 22rpx;
      }
    }
  }
  .btm{
    padding: 24rpx 35rpx 66rpx;
    .start-btn{
      width: 100%;
      height: 100rpx;
      border-radius: 50px;
      background: linear-gradient(172deg, #759FFF 27%, #4E6CEE 75%);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: PingFang SC;
      font-size: 36rpx;
      font-weight: 500;
      color: #FFFFFF;
    }
  }
}